In the year 2000, the situation between Akakuma and Jinjin on both sides of the Pacific Ocean was tense. On the day of the celebration of the 30th anniversary of the Akakuma Kingdom's rule over Inje State, female ambassador Gold protested against the Grand Governor's speech, and then strange fireworks appeared near the First Cape Fortress. The Akakuma army urgently assembled, but was raided by mysterious troops and the first promontory fortress was occupied. Marshal Lei, the chief war officer of the Kingdom of Jin, died mysteriously while communicating with Ambassador Gold. Admiral Argon took over the command and sent a fast-diving fleet to attack, but the fleet was unexpectedly wiped out. The Mecca Fortress of the Kingdom of Jin was suddenly attacked by a mysterious diving fleet. These enemy soldiers were unidentified and had strange equipment. Where do they come from? How will Jin Jinguo respond to this crisis?